Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Em quantos países foi a retirada total de água doce (km 3 /ano) de 169,39?
 ###Tabelas: CREATE TABLE fresh_water_withdrawal_by_country (fresh_water_withdrawal_by_country_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Total Freshwater Withdrawal (km 3 /yr) VARCHAR, Per Capita Withdrawal (m 3 /p/yr) INT, Domestic Use (m 3 /p/yr)(in %) VARCHAR, Industrial Use (m 3 /p/yr)(in %) VARCHAR, Agricultural Use (m 3 /p/yr)(in %) VARCHAR) CREATE TABLE 2012_ladder (2012_ladder_id AUTO_INCREMENT PRIMARY KEY, Wimmera FL VARCHAR, Wins INT, Byes INT, Losses INT, Draws INT, Against INT) CREATE TABLE list_of_princesses_royal (list_of_princesses_royal_id AUTO_INCREMENT PRIMARY KEY, Order INT, Name dates VARCHAR, Princess Royal from (date) to (date) VARCHAR, Parent VARCHAR, Date married VARCHAR, Husband dates VARCHAR) CREATE TABLE by_province (by_province_id AUTO_INCREMENT PRIMARY KEY, Province VARCHAR, Kibaki VARCHAR, Raila VARCHAR, Wamalwa VARCHAR, Ngilu VARCHAR, Others VARCHAR, Registered Voters VARCHAR, Turnout % VARCHAR) CREATE TABLE 2012_list (2012_list_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Company VARCHAR, Headquarters VARCHAR, Industry VARCHAR, Sales (billion $) INT, Profits (billion $) INT, Assets (billion $) INT, Market Value (billion $) INT)  
SELECT COUNT Country FROM fresh_water_withdrawal_by_country WHERE Total Freshwater Withdrawal (km 3 /yr) = 169.39